Tbh I am not sure to what extent FC are required to publish detailed information. Since accounting rules primarily are aimed at shareholders (and tax authorities), I'd be surprised if they were required to publish data on individual products.
For some time now, FC have been releasing segment data for "large scale MMOs" and "free-to-play MMOs". The FTP segment mainly included revenues from Bloodline Champions and from the infamous fashion game - so these days, there are hardly revenues in that segment. For people who are interested in a breakdown between AoC and TSW, this obviously isn't helpful, as both are aggregated in the "large scale MMO" segment.
So if we want to form an opinion on AoC and TSW, we are basically stuck with the very limited information on the "carrying value" of the two games in FC's annual reports. I'm no accountant, but if I understand correctly, immaterial assets such as the goodwill associated with a MMO are primarily recorded in a company's account based on their cost. Then, the company has to periodically check whether the expected revenues from the game are sufficient to cover that cost. If they are not sufficient to cover cost, the company has to record an impairment in the value of the goodwill. If I'm not mistaken, the company may also appreciate the value of the goodwill, if expected revenues exceed historical cost. However, European accounting rules seem to be rather conservative in this regard, so management has to be very convinced of the likelihood of revenues exceeding cost.
Information on this is included in FC's annual reports under the heading "calculation of recoverable amounts" (2012: p. 64 et seqq, 2013: p. 62 et seqq; 2014: p. 62 et seqq). However, I have to admit some of the stuff under that heading is serious accountant's jargon, which I am unable to follow.